Subnostr

According to Peter Todd (nostr:npub1ej493cmun8y9h3082spg5uvt63jgtewneve526g7e2urca2afrxqm3ndrm), Full RBF is useful for large multi-party transactions such as Wasabi CoinJoins.

If a CoinJoin participant double spends his input funds, then the entire collaborative transaction gets stuck for hundreds of other users. With Full RBF, it’s easy for everyone to pull out.

Listen to S14 E4 of the Bitcoin Takeover Podcast to learn more about the pros and cons of Full RBF.

#bitcoin #petertodd #fullrbf #rbf #replacebyfee #replacebyfeebitcoin #coinjoin #wasabiwallet #bitcoinprivacy #doublespend #bitcoinpodcast #bitcointakeover #bitcointakeoverpodcast #btctkvr https://nostr.build/av/3821f24bfe71634c0dc503487ceea9a392d104dfa90aa61c22d895fb7c11051d.mov

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Discussion

Big Barry Bitcoin 2y ago

I don't understand. A double spend means that I use the same utxo for a coin join and for a normal spend right?

Once the spend was confirmed into a block, the coinjoin should have just failed and asked everyone to restart before it got broadcast.

Either way, full rbf or not, nothing is confirmed until you have 5 confirmations. You can't guarantee nodes won't somehow let the old tx get to a miner who might mine it.

So all coin joins should take a minimum amount of time. Don't fuck around with something so important involving so many people and so many attack vectors.